Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

AMERICAN · FLIGHT AA 1550 SCHEDULED · TYPICAL SCHEDULE

Sunday, October 4

AA 1550 · DCA → BOS

departs 6:00 AM ET · arrives 7:39 AM ET

Forecast issued Thu 11:00 PM ET · 55h before departure

Arrive at BOS more than 15 minutes late?

3% chance · ±0 pts – · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to BOS?

On time or early
96%
15–30 min late
<1%
30 min–1 hour late
<1%
1–2 hours late
1%
Over 2 hours late
2%
Cancelled
<1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↓ Early flights usually leave on time

↓ 6am departures from DCA are usually not late

Weather at each end

DCA (origin) Gusts9 kt Ceiling1,300 ft Visibility10+ mi Precip0.40 in

BOS (destination) Gusts15 kt Ceiling4,500 ft Visibility10+ mi Precipnone

How this resolves

Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.

Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.

AA 1550 · DCA → BOS

Odds over time

How late will it get to BOS?